What are the provisions of the Insurance Act, 1938 regarding the time-limit beyond which the terms of a life insurance policy cannot be questioned?

The Section 45 of the Insurance Law (Amendment) Act, 2015 clearly stipulates that no policy of life insurance shall be called in question on any ground whatsoever (other than fraud) after the expiry of three years from the date of the policy, i.e., from the date of issuance of the policy or the date of commencement of risk or the date of revival of the policy or the date of the rider to the policy, whichever is later.